tx := bt.NewTx()

tx.From(
	"11b476ad8e0a48fcd40807a111a050af51114877e09283bfa7f3505081a1819d",
	0,
	"76a914eb0bd5edba389198e73f8efabddfc61666969ff788ac6a0568656c6c6f",
	1500)

tx.PayTo("1NRoySJ9Lvby6DuE2UQYnyT67AASwNZxGb", 1000)

wif, _ := bsvutil.DecodeWIF("KznvCNc6Yf4iztSThoMH6oHWzH9EgjfodKxmeuUGPq5DEX5maspS")

signer := bt.InternalSigner{PrivateKey: wif.PrivKey, SigHashFlag: 0}
err := tx.SignAuto(&signer)
if err != nil {
	fmt.Errorf(err.Error())
}

fmt.Println(tx.ToString())

	tx := bt.NewTx()

	err := tx.From(
		"b7b0650a7c3a1bd4716369783876348b59f5404784970192cec1996e86950576",
		0,
		"76a9149cbe9f5e72fa286ac8a38052d1d5337aa363ea7f88ac",
		1000)

	tx.PayTo("1C8bzHM8XFBHZ2ZZVvFy2NSoAZbwCXAicL", 900)

	o, err := bt.NewOpReturnOutput([]byte("You are using LiBSV!"))
	if err != nil {
		fmt.Println(err.Error())
	}

	tx.AddOutput(o)

	wif, _ := bsvutil.DecodeWIF("L3VJH2hcRGYYG6YrbWGmsxQC1zyYixA82YjgEyrEUWDs4ALgk8Vu")

	signer := bt.InternalSigner{PrivateKey: wif.PrivKey, SigHashFlag: 0}
	err = tx.SignAuto(&signer)
	if err != nil {
		fmt.Println(err.Error())
	}

	fmt.Println(tx.ToString())